216365025 has 24 divisors (see below), whose sum is σ = 373279680. Its totient is φ = 110376640.

The previous prime is 216365003. The next prime is 216365087. The reversal of 216365025 is 520563612.

It is not a de Polignac number, because 216365025 - 2⁶ = 216364961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216364983 and 216365001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60990 + ... + 64439.

It is an arithmetic number, because the mean of its divisors is an integer number (15553320).

Almost surely, 2^216365025 is an apocalyptic number.

216365025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

216365025 is a deficient number, since it is larger than the sum of its proper divisors (156914655).

216365025 is a wasteful number, since it uses less digits than its factorization.

216365025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125465 (or 125460 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 216365025 is about 14709.3516172536. The cubic root of 216365025 is about 600.3377958986.

The spelling of 216365025 in words is "two hundred sixteen million, three hundred sixty-five thousand, twenty-five".